CRESTAL BONE LOSS IN PATIENTS WITH DIFFERENT SURFACE MODIFIED DENTALIMPLANTS: INSIGHTS FROM COMPREHENSIVE REGISTRY DATA-BASED COHORT STUDY

Background:Several surface modifications have been performed on implant surfaces to improve osseointegration. The clinical results of these implants over a long term, however, have not yet been thoroughly assessed. Accordingly, the present registry data-based cohort study aims to examine the crestal bone loss (CBL) associated with sandblasted acid-etched and anodized dental implants. Materials and Methods : Case records of a total of 162 patients who underwent implant surgery (311 implants) using three different i mplant systems implants with sandblasted acid-etched [Group 1: SLA ® (93 implants), Group 2: SLActive ® (99 implants)] and anodized topographies [Group 3: TiUnite ® (119 implants)], followed by conventional loading between January 2022-June 2023 were enrolled. Digital X-rays at baseline, 3 months and 1-year intervals were collected from case records and crestal bone loss was measured. A one-way ANOVA was conducted for statistical analysis, followed by Tukey’s HSD post hoc test for further comparisons. Results: Implants in group 3 exhibited significantly higher CBL than those in groups 1 and 2 at 3 months and 1-year (p = 0.000). At 3 months and 1-year, the prevalence of CBL ≥2 mm was higher in group 3 implants (1.7%, 10.6%) followed by group 1 (0%, 2.2%) and group 2 (0%,0%). Conclusion: During a one-year follow-up period, anodized implants showed a higher incidence of CBL relative to sandblasted acid-etched implants.